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GO-2026-5149
Traefik: Pre-authentication decision bypass due to forwarded alias spoofing in github.com/traefik/traefik
Details
Traefik: Pre-authentication decision bypass due to forwarded alias spoofing in github.com/traefik/traefik
Are you affected?
Enter the version of the package you're using.
Affected packages
Go / github.com/traefik/traefik
Introduced in:
0 No fixed version published yet for github.com/traefik/traefik (go modules). Pin to a known-safe version or switch to an alternative.
Go / github.com/traefik/traefik/v2
Introduced in:
0 Fixed in: 2.11.43 Fix
go get github.com/traefik/traefik/v2@v2.11.43 Go / github.com/traefik/traefik/v3
Introduced in:
3.0.0-beta1 Fixed in: 3.6.14 Fix
go get github.com/traefik/traefik/v3@v3.6.14 References
- https://github.com/traefik/traefik/security/advisories/GHSA-5m6w-wvh7-57vm [ADVISORY]
- https://nvd.nist.gov/vuln/detail/CVE-2026-39858 [ADVISORY]
- https://github.com/traefik/traefik/releases/tag/v2.11.43 [WEB]
- https://github.com/traefik/traefik/releases/tag/v3.6.14 [WEB]
- https://github.com/traefik/traefik/releases/tag/v3.7.0-rc.2 [WEB]